Turbine installation



Feb. 12, 1946. J. 5. HALL TURBINE INSTALLATIONS Filed Feb. 28, 1944 5 Sheets-Sheet 1 Ihvehtorfi Joseph Stanley Hall,

1 a? JMZ His Attorney Feb. 12, 1946. J, s. HALL 2,394,685

TURBINE INSTALLATIONS F iled Feb. 28, 1944 5 Sheets-Sheet 2 F 3 1 a T 121 a? i f bl F 5. a

Inventor: Joseph Stanley Hall,

Jr 6T) ls Attorney.

Feb. 12, '1946. J HALL TURBINE INSTALLATIONS KSheets-Sheet 5 Filed Feb. 28, 1944 Patented Feb. 12,1946

UNITED STATES OFFICE Metropolitan-Vic'kers Elec 1c 'Cbinpany Liniited, a company of 'Great Britai'n Application February 28, 1944, Serial No.'524,210 In Great Britain March 29, 1943 7 Claims.

This invention relates to turbine installations and in particular to structural improvements therefor.

In the case of turbine installations "employed in marine propulsion systems, circumstances may arise, especially in wartime, where the turbine structure is liable to be subjected to appreciable inertia forces due for instance to rapid acceleration under shock conditions. The present invention is directed, in certain aspects, to structural improvements in turbine installations, which-are intended more particularly to confer upon the turbine installation grea-t structural strength to resist such large inertia forces. However, although the invention is eminently "suited in its application to turbine installations employed in marine propulsion systems, it is not limited to such application, the structural improvements being in fact-advantageously applicable to turbine installations in general, and especially to such installations where fabricated construction is adopted, not onlyas regards increasing the inherent strength of the structure but also for securing other advantages as "to accessibility and freedom from distortion in operation.

Stated generally, in a steam turbine installation according to the invention, the condenser is arranged to be supported, either wholly or mainly, by the turbine structure from locations adjacent the supports for the turbine structure.

In practising the invention, with a turbine structure in which the turbine cylinder or cylinders or equivalent casing or casings is/are arranged to be supported with the turbine axis horizontal between end mountings, the condenser may be suspended from the turbine structure by means of substantially vertical, preferably relatively flexible, plates extending transversely of the turbine axis and attached to the turbine cylinder(s) or casing(s) at locations adjacent to said end mountings. An important advantage of this arrangement is that, with the turbine structure thus virtually constituting a loaded beam which is loaded near its ends as well as end-supported, a relatively low bending-moment is assured in the region of the turbine structure substantially midway between the end mountings, namely, in the case where two turbines are mounted side by side to operate on acom mon horizontal axis between end ,mountings, that place where the turbine structure is discontinuous by reason of the turbine cylinders or 'casings being separated in order to form the exhaust p ning.

Thetu-rbine cylinder or cylinders or equivalent caslngfsl may be releasably secured to the con denser structure, as for instance being bolted to a vertical face or faces on the condenser casing, or by means of joint flanges on the turbine cylinder creasing and the condenser casing which are bolted together to form 'a horizontal joint, or said turbine cylinder(s) or casing(s) may be ed integrally with :said condenser casing or formed separately and permanently attached thereto as by welding. However, with the condenser casing suspended from the turbine cylind'ei or casing and supported therefrom as described, by means of flexible plates, almost complete freedom of relative expansion and contraction in the axialdirection is allowed without distortion, because of the flexibility of said-plates.

The invent onalse provides a, combined turbine and condenser structure in which theturbine casing or casings, whilst having the condenser casing connected to it either releasably or integrally so "asto be supported jointly therewith between end mountings, is/are also connected to said condenser casing by flexible plates extending transversely of the turbine axis and attached to the -turbine 'casing(s) adjacent said end inount'ings. With this arrangement, and the connecting plates suitably proportioned to carry inertia loads and to give the required flexibility,

said plates will perform the additional function of resisting the action of atmospheric pressure tending to crush the condenser casing and tur-, bine casings) together.

'In carrying out the invention, the flexible plates connecting the turbine casing(s) and confd'en'ser easing as aforesaid, may be rigidly and permanently attached to the one part as by welding but releasably attached to the other part as by means of bolts or keys, or alternatively may be attached to each such part by a combination of welding and bolting or keying, whereby. to permitof adjustment during assembly.

' The plates for supporting the condenser structure may be as wide as desired at the part where they are attached to the condenser casing so as to provide adequate support for said condenser The aforesaid and other structural improve-V ments according to the invention are eminently applicable to -low pressure steam turbine installations such for instance as are conunonly used in marine propulsion plant, namely of the type in which two turbines, say one for ahead run ning and the other for astern running, are arranged facing eachother on a common axis between, end mountings and so that both turbines discharge into the-same exhaustspace.

In turbine installations of the'type ust referred to, however, where the condenser is arranged to be supported from the turbine cylinders or casing, it is importantthat the gap between the cylindersor portions of casing for the respective turbines should be bridged in a manner which, whilst ensuring the necessarystructural strength, yet involves minimum impediment to the flow of exhaust steam from the turbines. With this end in view, according to a feature of the invention stifiening ribs in the form of plates arranged way of example, with reference to the accompanying somewhat diagrammatic drawings, in which:

Figure 1 is an axial section of one form of combined turbine'and condenser structure in accordance with the invention, and

Fig. 2 is a transverse section taken along line IIII of'Fig. 1;

the

Fig. 3 is a half end elevation, and Fig. 4 a

transverse section along line'IV-IV of Fig. 3, for another form of combined turbine and condenser structure according to the invention, as

seen with' the part above the turbine axis may be obtained without the use of stiffening ribs and tie-bars but by a special construction hereinafter to be described. Usually the ,con-

denser structure will includefsagging plates.

Accordingly, where vertical stiffening ribs are provided as aforesaid, it is. importantv that they should be so'mounted in the exhaust spaceas to have clearance with the condenser sagging plates and so that such clearance shall: be maintained in spite of expansion of the stiffening plates omitted; and

Fig. 5 is a partly broken perspective view of another form of combined turbine and condenser structure according to theinvention, parts above the turbine axis being omitted, while Figs. 6, 7 and 8 are respective line diagrams explanatory oi the structure shown in Fig. '5.

It will be appreciated that in the interests of clarity, the rotational parts, and others, of the turbines have been omitted from the drawings, their construction being well understood and their detailed description being considered unnecessar for the purpose in view.

Referring first to Figs. .1 and 2, at A is indicated, somewhat generally, the upper and lower half-cylinders, or casing, of a low'pressure steam turbine, while at A is represented, also some- ,what generally, the upper and lower half-cylinders, or casing, of a high pressure turbine; as

- shown, the turbine casings A, A are mounted in side-by-side relationship between supporting end pedestals B, B respectively so that the turbines .operate about a common horizontal axis and since [the latter. may well become appreciably hotter than the condenser casing and outer structure, especially when for instance the astern turbine is in operation. a

With the turbinecylindefls) and exhaust cas ing connected to the condenser casing as de-"- scribed, it may in' some cases be desirableto make provision for some degree of relative con- ,traction and expansion in the'vertical direction between the turbine casing and the condenser casing transversely of the turbine axis. Accord-f ing to a subsidiary feature of the inverrtion, such provision is made in the form ofa substantially discharge into a common exhaust opening, for which purpose said casings A, A are attached in customary mannerat their outer ends to said pedestals B, B respectively so that the turbines operate about a common horizontal axis and discharge into a common exhaust opening, for which purpose said casings A, A are attached in customary manner at their outer ends to said pedestals B, B while being arranged at their inner ends to form said exhaust opening.

7 It will be appreciated that the turbines represented by casings A and A respectively may, for

horizontal strip extending all round the upper zontal turbine joint in order to meet the exhaust belt of the upper half cylinder, the wall of the "exhaust space being thus virtually integral withthe condenser shell. However, in other instances it may be convenient or desirable to provide horizontal joint fiangeson the condenser shell and the turbine exhaust passage, which flanges may be welded or bolted together. a

Certainof the above and other features of the V invention are embodied'in combinedturbine and condenser. structures hereinafter described and particularised in the appended claims.

' wall of the condenser casing with, which 'it is 7 example. be such as commonly employed in marine propulsion installations, the high pressure turbine A generally to provide the drive for ahead running and the low pressure turbine to provide the drive for running astern.

the V der' of turbine casing A.

In order that the invention-may be'fullyune' derstood and carried into effect, three specific embodiments thereof will now be des ib y Located vertically beneath the turbines is a condenser C, represented by its side wall or shell Ca and customarysagging plates Cb, for receiving, and condensing, the steam exhausted from the turbines. 'In'the embcdiment'shown, that portion Cc of the condenser shell at the top has attached to it two upstanding flanges Cd and Cd respectively bounding the opposite axial ends of opening Ce through which the exhaust steam ,passes into the condenser; the flange Cd is re-' leasablyse'cured along a vertical face by studs D toa vertical face of a flange Aa attached to the lower half-cylinder of turbine casing A, while the flange Cd is likewise secured by studs D to af flange Aa attached to the lower half-cylinthe turbine axis, the condenser shell Ca is continued from the upper wall Co to provide a Wall Cf bridging the gap between the lower half-cylin- I ders of casings A, A and extending up to the level of the turbine axis where it terminates in a joint flange adapted for attachmentrto a like On opposite sides of flange in which. terminates a wall 01" extending across the gap separating the inner ends of the upper half-cylinders of casing A, A", the arrangement being such as to provide an exhaust steam belt E all around the inner ends of the 1 turbine cylinders for ducting exhaust steam through exhaust opening Ce into the condenser C.

In addition to the connection between the condenser C and the turbine casings A, A, as just described, the condenser C is connected to the turbine casings A, A in a manner such that the weight of the condenser is almost wholly taken up by the turbine casings A, A at locations whereat said casings are themselves supported by the end pedestals B, B". For this purpose, there depends, substantially vertically from the location at. which the lower half-cylinder A is attached to pedestal B, a plate F disposed with its general plane. extending transversely of the turbine axis, said plate F being of such composition as to be appreciably flexible in the direction transverse to its general plane, and terminating at its lower end in a transverse reinforcement G which is releasably attached, by a horizontal key H and studs J, to a bar K fast with the side wall Ca of the condenser; likewise, at the other end of the turbine axis there depends from the location of attachment of the lower half-cylinder A" to the end pedestal B, a. preferably flexible plate F terminating in reinforcement G which s attached by key H and studs J o a bar K fast with the condenser side Wall Ca.

It will be understood that the plates F, P will be appropriately sized for the purpose in View, preferably being each of width such as to extend over substantially the whole dimension of the condenser C in the direction transverse to the turbine axis and being haped at the upper end to conform with the shape of the turbine casing A or A at the location of attachment of the.

latter to the end pedestal B or B.

With the turbine structure supported at its ends and loaded by the condenser structure near the turbine end supports, the combined turbine and condenser structure may virtually be considered as a beam supported at its ends and loaded at or near its end supports, an arrangement having an inherently low bending moment centrally of the supports, which, be it noted, is the region where the turbine casing is virtually discontinuous inasmuch as the turbine casing A, A are separable parts though connected by the exhaust belt. Moreover, by connecting the condenser to the turbine structure through the vertical plates F, F, and at the vertical faces of flanges Cd and Cd, the turbine structure can as a Whole freely expand and contract relatively to the condenser structure in the general direction of the turbine axis. Further, the Plates F, F have an important funct n in cr sing the resistance of the structure to collapse under the tendency of atmospheric pressure to crush the turbine casing and the condenser casing together.

In the construction shown in the drawings, the side portion, Ca, of the condenser casing is joined with the condenser upper wall Co and exhaust belt wall Cf through a preferably integral intermediate and substantially horizontal strip portion Cy extending all around said upper wall.

With this substantially horizontal strip Cg formed so as to be. suiiiciently flexible as to be capable of flexing or breathing during relative contraction and expansion in the vertical direction between the turbine casings A, A on the one hand,

and the condenser casing Ca on the other hand, the tendency for the structure to become distorted due to such contraction and expansion is minimised.

With a view to improving the strength of the structure whilst involving but minimum impediment to the flow of steam from the turbines through the exhaust belt E into the condenser opening Ce, the turbine casings A, A may be connected together internally by stiffening ribs L each in the form of a plate arranged with its general plane substantially vertical and having opposite ends rigidly attached, as by welding, to the casings A, A where they overhang the exhaust space Ce.

Where such vertical stifiening plates L are provided as described, they are mounted as shown so as to have appreciable clearance with thetops of the condenser sagging plates Cb and so that such clearance shall be maintained notwithstanding expansion of the stifiening plates L in the downward direction; this is essential since the stifiening plates L may well become appreciably hotter than the condenser structure as for example when the exhaust turbine is alone in operation as for astern running.

As an alternative, but preferably in addition, to the provision of the stiffening plates L, the turbine casings A and A may be connected together by means of tie-bars M extending in the direction of the turbine axis, one or more such tie-bars M being conveniently arranged as shown to Connect together the aforesaid flanges Aa and Ac attaching the condenser to the turbine structure.

It is to be understood that the drawings are purely diagrammatic as to the details of the turbine structure and its supports and that the turbine casings A, A as well as the supporting pedestals B, B may be either of cast construction, or fabricated, the benefits of the invention being secured with either method of construction.

The embodiment of the invention illustrated in Figs. 3 and 4 is substantially similar to that just described, in that it involves two turbine casings a, a mounted side-by-side to provide a common horizontal turbine axis, between supporting end pedestals b, b, and a condenser c suspended beneath the turbine casings with its weight mainly taken up by, preferably flexible, plates J, j depending, with their general planes substantially vertical and transverse to the turbine axis, from the locations whereat the casings a, a are at tached to the pedestals b, b; as shown, plate I is attached at its upper end by rivets and bolts ft: to a plate ab which takes part in the attachment of casing a to the pedestal b and extends substantially up to the level of the turbine axis and, with the plate 1, is tapered to conform with the shape of the lower half-cylinder of casing a, while said plate I, at its lower end, is attached by rivets jg to a reinforcement g which extends over an appreciable width of the condenser c (Fig, 3) and is, in turn, attached by bolts 7' to a bar- It fast with the side wall ca of the condenser casing; attachment of plate f is efiected in similar manner.

In this embodiment, the condenser side wall ca is formed all around its upper edge with a vertical flange cc terminating in a horizontal joint flange ed, The horizontal joint flange'cd is attached, by welding or otherwise, to a corresponding flange attached to a substantially horizontal wall d apertured to provide exhaust opening dc for admitting exhaust steam into the condenser, said opening being boundedat opposite axial ends or cast construction.

by flanges ac and aa fast with the turbine casings a and a respectively; a wall e extends from the joint flange do and bridges the gap between the inner ends of the turbine casings a, a so as to form the exhaust belt leading to the upper halfcylinders of casings a, a.

It will be understood that the turbine casings a, a may be rigidly connected together by stiffening ribs and/or the bolts as described for the embodiment illustrated in, Figs. 1 and 2; moreover, the details of-the turbine casings and their supports may be carried out either in cast or fabricated construction. The principles of construction, and attendant advantages, specifically referred to in connection with the embodiment il-..

lustrated in Figs. 1 and 2, except as regards the special provision (Figs. 1, 2) for enabling relative movement of the turbine and condenser structures in the vertical direction, apply to the em bodiment illustrated in Figs. 3 and 4.

In the embodiment of the invention shown in Fig. 5' and to which the explanatory diagrams of Figs. 6, '7 and 8 relate, a low pressure steam turbine and a high pressure steam turbine, as represented by their lower half-cylinders 1, 1' respectively, are mounted in side-by-side relationship and so as to have a common horizontal axis,rbetween respective end pedestals 2, 2; (of which only the pedestal 2 appears in Fig. 5) and arranged to discharge into a common exhaust space.

Thus, the half-cylinders I, I are attached at their outer ends in customary manner to the supporting end pedestals 2,2 whilst between their inner which are keyed horizontally to bars 8, 8 which, in turn, are secured to the sidewall 3a of the condenser at opposite axial ends thereof; the attachment of the plates 4, 4 to the bars 8, 8' may also involve screws, rivets or welded joints.

. As shown, the vertical plates 4, 4' extend over I an appreciable dimension of the condenser 3 transversely of the turbine axis and it is. contemplated that they will be of such size as to be capable of carrying between them substantially the whole'weight of the condenser; they are moreover preferably flexible in the direction of their general planes, that is in the longitudinal direction of the turbine axis.

Located on opposite sides of the turbine axis are plates I0 and Ilia respectively, said plates being disposed with their general planes substantially vertical and parallel with the turbine axis. As

shown for the plate III in the drawing, each such plate is relatively deep, extending substantially from the level of the turbine axis down to the level of the horizontal portion 30 of the condenser casing but somewhat short of the top edge of the sagging plate 3b. Moreover, as shown for the plate III, the plates are continued fore and aft beyond the inclined extension walls 3d, 3d of the condenser casing; in some instances each such plate may be formed in one piece although-in other instances they m ybe formed each in three separate pieces represented in the drawings for plate III by a main-eentralpiece terminating at the inclined walls 3d, 3d andfore and aft flanking pieces III and II) respectively extending to locations just shortof the verticalwebs 5 and 5 The plates I0 and Illa are of general hogback shape so as to clear'the steam inlet pipes to.the turbines; in the drawings, theflanking a casing consisting of side wall 30. (shown broken away in the foreground of the drawings to reveal sagging plate 31)) a substantially horizontal, and conveniently integral, strip 3c extending all around the upper edge of the side wall, together with, conveniently integral, walls 3d, 3d converging together as they rise substantially to the level of the turbine axis Where they terminate in flange-s te, 3c; the walls 3dand 3d are joined withthe inner ends of the lower half-cylinders of casings I, I thus to flank the gap between same, and the walled is joined to the wall 3d on opposite sides of the turbine axis so as to.

V J bridge said gap and form. an enclosing. belt for conducting exhaust steam into the condenser '(part of this exhaust belt is shown at 3), thepart,

which would normally appear in theforeground of the drawings being broken away at'the secxtensionstd, 3d)

' tioned parts of the condenser casing 3a and its piece I0". is shown as clearing the steam inlet II associated with turbine casing I. n

The fore-'and-aft plates II Illa. are secured to the inner ends of the turbine casings I, I' by respective plates I2, [2, conveniently of substantially inverted yoke, or saddle, shape, disposed with their general planes transversely of the turbine axis and conveniently attached by bolts to flanges on the respective lower half-cylinders I, I.

- With the arrangement described, it will be seen that the fore-and-aft plates Ill, Illa, together with transverse plates I2, I2 bridge the gap between the inner ends of the turbine casings I, I in manner to confer mechanical strength to the, turbine structure in the fore-andaft direction 'of the turbine axis.

' 3d, act therewith to closethe gap between the turbine casings I, I and form that part of the The condenser'3 is suspended from the turbine casings I, I by means of flexible plates 4, 4' disposed at opposite axialends of the turbine strucll, 4, being attached by vertical webs 5,5" respectively to the respective turbine casing half-cylinders I, I adjacent the locations at which the lat-' ter are themselves attached to the end pedestals 2, 2f more particularly, as shown for the plate ture with their general planes substantially ver-'- tical and transverse to the turbine axis, said plates from the lower half-cylinders of the turbine .cas-' ings I, I into the condenser 3; also, said plates I0, Ifla, together with the'extensions of casing ,walls 3d, 3d lyin on the outer sides of said plates, form therewith that part 3 of the exhaust belt for ducting exhaust steam from theupper half-cylinders of casings I, I {into the condenser 3. 7 a

The transverse plates I2, I2 forattachin the fore-and-aft plates I8, I0ato the turbine casings I, I need only be short horizontally, and being 7 therefore practically ,free from bending transe versely of. the turbine axis, canbe relatively shallow; with casings I, I thus attached to the foreand-aft plates I0, Illa near to the turbine horizontal joint, said casings I, I are substantially free to expand downwardly. relatively to said Moreover, said plates IILI Oagbeing' flanked by the condenser casing extensions 3d,

plates I0, 10a, a desirable feature inasmuch as the casings will generally be at higher temperatures plates l0, Illa, that of the transverse plates I2, I2, together with the top run of condenser wall ex-';

tensions 3d, may be consoliated in a flange I3 adapted to be joined to a corresponding flange on the part of the exhaust belt for the upper halfcylinders of casings I, I.

The fore-ancl-aft plates I and Illa terminate at one end in a plate I4 'whichis disposed, with its general plane substantially vertical and transverse to the turbine axis, just inside the vertical plate 4, and is attached ,at its lower end to the bar 8 fast with the condenser casing 3a, that is, substantially at the level at which the outer vertical plate 4 is attached to said casing 3a. Likewise, said plates ID, Illa terminate at the other end Lin-plate .I4" disposed, with its general plane substantially vertical and transverse to the turbine axis, just inside the vertical plate 4', and attached at its lower end to bar 8' fast with the condenser casing 3a. In the drawings, plates I4, I4 are shown as integral with plates I0, lIla but it will be appreciated that they may be formed separately and joined thereto as by welding. In some instances, the inner plates I4, I4 may be constituted merely by upward extensions of the vertical sides 3a of the condenser casing. It is preferred that the inner transverse vertical plates I4, I4 be flexible in the direction of the turbine axis, thus not to impede relative expansion and contraction between the turbine casings on the one hand and the condenser on the other hand.

From the foregoing, and as indicated diagrammatically in Fig. 6, it will be seen that the foreand-aft vertical plates Ill, IOa flanking the turbine casings I, I on opposite sides of the turbine axis, together with transverse plates [2, I2 and transverse inner plates I4, I4 attaching said plates I0, Illa to the turbine casings I, I, provide a rigid turbine structure supported on end pedestals 2, 2'. Moreover, as diagrammatically illustrated in Fig. 7, this rigid turbine structure supports the condenser 3 through transverse outer plates 4, 4' attached to said structure at the locations of its attachment to the end supports 2, 2, thus ensuing low bending moment in the portion of the structure lying centrally of the supports 2, 2. Further, as represented diagrammatically in Fig. 8, the inner transverse plates I4, I4 attaching the condenser 3 to the turbine structure act to resist the tendency -for the turbine structure and condenser to be crushed together under the atmospheric load.

Considering the combined turbine and condenser structure as a whole from the point of View of mechanical strength, particularly in the vertical direction, the fore-and-aft plates in and Illa, in addition to being attached to the turbine casings I and I by the transverse plates I2, I2 are also attached to said casings I, I by being attached to the inner transverse plates l4 and I4 extending downwardly to the condenser 3 and in turn attached through the condenser casing 3:: to the outer transverse plates 4, 4' fast with the casings I, I; Whereas this method of attachment of the fore-and-aft plates I0 and Illa to the turbine casings I, I' provides great strength vertically it is specially advantageous in that, with the transverse plates 4, 4' and I4, I4

sufficiently flexible in the longitudinal direction of the turbine axis, differential expansionand-co'ntraction between the turbine casingsand the eondenser t'zasing is allowed but without resulting distortion of the structure; such-distortionless expansion and contraction is further assisted by the inclusion of the h'orizontal strip portion 3c inthe upper casing wall of the condenser.

Although the embodiments of the invention illustrated are of the type in which two turbines are combined in a common turbine structure, it

is believed that the manner in which theprinciples of construction can be applied "to installations having a single turbine will readily be undersembiy associated with the respective ends of the casing, a condenser arranged beneath the casing, and means supportingthe condenser from the casing including a pair of vertical plates fastened to the casing adjacent each pedestal, the plates being arranged transversely of the axis of the casing and having flexibility in an axial direction.

2. A turbine and condenser assembly including two turbine casings arranged on a common horizontal axis with their exhaust ends in adjacent I but spaced relation, a support pedestal associated with each casing, a condenser arranged below the casings, means supporting the condenser including vertical plates fastened to the casings adjacent the pedestals and arranged transversely of the axis of the casings, and walls secured to the casings and to the condenser defining an exhaust collector passage surrounding the adjacent spaced ends of the casings and communicating with the condenser.

3. A turbine and condenser assembly including a turbine casing with its axis substantially 4 horizontal, a pedestal for supporting the assembly associated with each end of the casing, a condenser arranged beneath the turbine casing, means supporting the condenser including a plate arranged transversely of the axis of the casing and adjacent a support pedestal, means securing the upper portion of the plate to the turbine casing and means securing the lower portion of the plate to the condenser, at least one of said securing means being readily detachable.

4. A turbine and condenser assembly including a turbine casing with its axis substantially horizontal, a pedestal for supporting the assembly associated with each end of the casing, a condenser arranged beneath the casing, and means supporting the condenser from the casing including vertical plates" fastened to the casing adjacent the respective support pedestals, the plates being arranged transversely of the axis of the casing and designed to carry substantially all the ranged below the casings means supporting the condenser including vertical plates fastened to the casings adjacent the pedestals and arranged V transversely of the axis of the casings, and walls 1 securedto the casings and to the condenser de-. fining an exhaust collector passage surrounding the adjacent spaced ends of the casings an communicating with the condenser.

1 6. A turbine and condenser assembly including two turbinecasings arranged on a common horizontal axis with their exhaust ends in adjacent but spaced relation, a support pedestal associated with each casing, a condenser arranged .below the casings, connecting means rigidly joining the turbine casings and including substantially vertical plates onopposite sides of and parallel to the axis of the casings, said plates 'being attached to the inner ends oi the casings by transverse members and attached to the outer ends of the casings by transverse vertical plate members which extend downwardly to constitute extensions ofthe condenser sidewalls, means supporting the condenser including other vertical plates fastened to the casings adjacent thezpedestals and arranged transversely of the axis of the casa ings; and walls secured to the casings and to'the condenser defining} an exhaust collector passage surrounding the adjacentspaced ends of the casms and communicating with the co'ndenser.

7;?A turbine and condenser assembly includin a turbine casing arranged with its axis substantially horizontal, .pedestals'for supporting the; as-

sembly associated with the respective ends of-the casing, a condenser'arranged beneath the c'asing' and adapted to be supported therefrom, means supporting the condenser including vertical longitudinal and vertical displacements of 'the condenser relative to the turbine casing JosEPH STANLEY HALL. 

